Mitsui Sumitomo Insurance Co Ltd 13F holdings
Mitsui Sumitomo Insurance Co Ltd reported 1 position with a total reported value of $4.1B as of 2026-06-30, in its 13F for Q2 2026, filed 2026-08-13. Top holdings by reported value: WRB W. R. Berkley Corporation (100.0%). Against 2026-03-31 it opened 0 new positions and exited 0. Next 13F due by 2026-11-14, the legal deadline 45 days after the quarter ending 2026-09-30.
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Top holdings
1 largest of 1 positions · reported value as of 2026-06-30
| Holding | Shares | Reported value | % of portfolio |
|---|---|---|---|
| WRB W. R. Berkley Corporation | 58,780,450 | $4.1B | 100.0% |
SEC FORM 13F · Q2 2026 · VALUES AS REPORTED, NOT PRICES
New positions this quarter
Held at 2026-06-30, not at 2026-03-31 · 0 in all · reported value as of 2026-06-30
No new positions.
Sold out
Held at 2026-03-31, gone by 2026-06-30 · 0 in all · reported value as of 2026-03-31
No positions were sold out.
Biggest increases and decreases
Positions held at both quarter ends, by change in shares · reported value as of 2026-06-30
Increases
No position was increased.
Decreases
No position was decreased.
CIK 1142206 · 13F FILINGS ON EDGAR · INFORMATIONAL ONLY
